230644949 has 2 divisors, whose sum is σ = 230644950. Its totient is φ = 230644948.

The previous prime is 230644903. The next prime is 230644957. The reversal of 230644949 is 949446032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156375025 + 74269924 = 12505^2 + 8618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230644949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230644549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115322474 + 115322475.

It is an arithmetic number, because the mean of its divisors is an integer number (115322475).

Almost surely, 2^230644949 is an apocalyptic number.

It is an amenable number.

230644949 is a deficient number, since it is larger than the sum of its proper divisors (1).

230644949 is an equidigital number, since it uses as much as digits as its factorization.

230644949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 230644949 is about 15186.9993415421. Note that the first 3 decimals coincide. The cubic root of 230644949 is about 613.2647221284.

The spelling of 230644949 in words is "two hundred thirty million, six hundred forty-four thousand, nine hundred forty-nine".